An accurate determination of the gas physical and dynamical properties (density, temperature, mass, momentum) in the low-velocity outflow and the jet were obtained from a detailed CO multi-line analysis by [1]} and [2]}. The authors showed that in the southern lobe the jet carries enough momentum (\(1.7\hbox{\hspace{1.99997pt}$M_\odot $}\hbox{\hspace{1.99997pt}km\hspace{1.99997pt}s$^{-1}$}\) ) to accelerate the ambient gas and drive the low-velocity entrained gas (\(2.6\hbox{\hspace{1.99997pt}$M_\odot $}\hbox{\hspace{1.99997pt}km\hspace{1.99997pt}s$^{-1}$}\) ).
CO emission knots were found inside the southern jet, with sizes of 2–4 and peak velocity variations of several \(\hbox{\hspace{1.99997pt}km\hspace{1.99997pt}s$^{-1}$}\) . They proposed that these knots trace internal shocks, which would be responsible for the hot (400–\(750\hbox{\hspace{1.99997pt}K}\) ) gas component detected inside the jet.
